97 Buick Stalling

mmclean27 · #1 04-21-2007, 11:09 PM

My car has been stalling for a few months now and I cant figure out why. It never stalls in the morning on the way to work. Im guessing its because the engine is cool. Now on the way back home (Its usually wamer) the car almost always stops when the car gets warm. When the car gets warm I notice the oil pressure guage seems to be fine until i come to a stop then it drops considerably. Press the gas and it jumps back up. Kinda Weird. Its in the 10-15 minute range as well when it stops. I used to be able to put it in neutral and start it mid-roll. Now it won't always start but if i let it sit 5 or 10 it always starts. I really need help getting this fixed.

HotZ28 · #2 04-21-2007, 11:23 PM

Replace the crank sensor and see what happens, your symptoms are typical of a failing crank sensor.

Also, it could be the ICM (Ignition Control Module) Click Here for some more recent info.

mmclean27 · #3 04-23-2007, 09:40 PM

I was reading in previous posts that a crankshaft sensor would not actually stall the vehicle. Is there any truth to that?

HotZ28 · #4 04-23-2007, 09:55 PM

Quote:

Originally Posted by mmclean27

I was reading in previous posts that a crankshaft sensor would not actually stall the vehicle. Is there any truth to that?

No, a CPS failure will stall the engine!

mmclean27 · #5 04-23-2007, 10:06 PM

What about the oil pressure guage fluctuation. I also heard that was sometimes just "a GM problem." Definitly doesn't sound logical.

HotZ28 · #6 04-23-2007, 11:08 PM

The oil pressure sensor has a very small orifice that can get clogged. It is located above the oil filter in the front of engine. Easy and cheap to replace!

mmclean27 · #7 04-25-2007, 01:36 AM

Ran to the part store and picked up a crankshaft sensor. Judging by the forums this seems to be a pretty common problem. And today on the way I stalled out bad for about 10 minutes. My car was warm from driving it a couple hours before. I pulled over and tried to start it and start it and nothing. Then I doused some water on the engine and it started the next try. Any thoughts on that?

HotZ28 · #8 04-25-2007, 12:37 PM

Click Here & read post #3.

mmclean27 · #9 04-25-2007, 09:28 PM

Ok so I had my mechanic change out my crank sensor with a brand new one just a few hours ago and it still stalled . He unplugged the fuel sensor and the vehicle drove the rest of the way home and started up right away. Although the check engine light was on of course. Next step is going to be forking out the money for the ICM unless any other options you can think of.

mmclean27 · #10 05-01-2007, 09:17 PM

So now that the weather has been getting warmer the car is stalling more and more frequently. I am sure it has to do with the heat. I have been pouring water on my icm and on the new crank sensor and it doesnt make any difference. I cant really afford to just get a new car and this one is already payed off. I really need some more suggestions on how to fix.

LeSabre97mint · #11 05-02-2007, 07:04 AM

Hello

Is your car stalling because there is a lack of fuel or lack of spark? When the engine stalls check for spark by having an extra sparkplug along with you. Pull a plug wire and conect it to the plug and lay the plug on the block. Turn the engine over and look for spark. If you have spark you have a fuel problem.

Also, fuel pumps can quite when they get hot. Something to think about.

Another item may be ground studs under the hood. My 97 was stalling....not quite like yours is....It turned out to be a dirty ground stud on the passenger fender. My lights would dim when I used the power windows, the engine even stalled when I held the powerwindow switch too long. My alternator wasn't charging very well, and I would get a check engine and other lights lighting up now and then and then go off.

Regards

Dan

Luke. · #12 05-02-2007, 10:06 AM

Quote:

Fm 'Dan' > Le Sabre 97 Mint

...check for spark by having an extra sparkplug along with you. Pull a plug wire and conect it to the plug and lay the plug on the block. Turn the engine over and look for spark. If you have spark you have a fuel problem.

Very Good suggestion > I'll add it to my 'library' of information. Thank You

mmclean27 · #13 05-02-2007, 04:24 PM

Dan,
I was under the impression that if i had a fuel problem the vehicle would sputter and then quit. It never hesitates just dies. I have had my plugs and wires changed about 3 months ago so I dont think that would be the problem. I was hearing from a friend it could actually be my coil packs. There was a time when I bought a new battery and the vehicle ran fine ALL DAY. I thought it was fixed cause it didnt stall at all so I tested it by driving around for an hour or two. Then the next morning. Same old stalling.

Marshall Dillon · #14 05-02-2007, 05:12 PM

My 93 is exhibiting the same symptoms. I've replaced the fuel pump, not the sock though, the fuel filter but no change. I've tested the fuel pressure when this starts sitting in the drive way and revving the engine the fuel pressure drops to almost zero. The pressure returns to normal at idle. I'm most likely going to take it in to a garage next week. I don't want to throw any more parts at it and not fix the D*****thing!!!!!!!!!. I'll post here if and when I find a solution, if I find one,, any help would be appreciated....

LeSabre97mint · #15 05-02-2007, 11:20 PM

mmclean27

Have you checked the voltage output of the alt when the car is running? I would put a volt meter in the car so you can test when you're driving. I would be willing to guess that the voltage drops when the car stalls out.

Regards

Dan

POST REPLY TO THIS THREAD